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l. SCHUMACHER.

MACHINE FOR MAKING PlASTER BOARD AND THE LIKE.

APPLICATION man FEB. 20. 1919.

1,308,723. Patented July 1, 1919.

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J. SCHUMACHER.

MACHINE FOR-MAKING PLASTER BOARD AND THE UKE.

.A-PPLICATION FILED FEB. 20, 19m.

'1 308,72 3'. Patented July 1, 1919.

5 SHEETS-SHEET 2.

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J. SCHUMACHER.

MACHINE FOR MAKiNG PLASTER BOARD AND THE LIKE.

APPLICATION men rmzo. ma.

1,308,723. Patented July 1, 1919.

5 SHEET$SHEET 3v IE I g.

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J. SCHUMACHER.

MACHINE FOR MAKING PLASTER BOARD AND THE LIKE.

APPLICATION FILED FEB. 20. I919.

1,308,723. Patented July 1, 1919.

5 SHEETS-SHEET 4- Till OOLIJMBIA Iuummurn 00., wnsmm, D. c.

J. SCHUMACHER.

MACHINE FOR MAKING PLASTER 50mm AND THE LIKE.

APPLICATION FILED FEB. 20. I9l9.

1,308,723. Patented July 1, 1919.

5 SHEETS-SHEET 5.

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UNITED STATES PATENT OFFICE.

JOHN SCHUMACHER, DE LOS ANGELES, CALIFORNIA.

MACHINE FOR MAKING PLAS'IER-BOARD AND THE LIKE.

Application filed February 20, 1919.

To all whom it may concern:

Be it known that I, JonN SoHUMAcnEn, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Machines for Making Plaster-Board and the like, of which the following is a specification.

Plaster board such as is used in the building arts is usually formed of strips or sheets of paper, paper board, or the like between which is placed a layer of initially unstable plastic material, which adheres to the paper and hardens or sets forming a finished article having surface sheets of paper and a filling of plaster.

This invention relates to apparatus in which plaster board is produced by the continuous supply of the materials or component parts thereof, and in which the finished or partly finished board is severed while it. advances.

Apparatus for making plaster board has heretofore been employed, in which two sheets of paper are fed continuously in a horizontal direction from rolls, the plaster material being deposited upon the lower sheet and the upper sheet being pressed thereon, the board being carried forward by a conveyor.

It is one of the primary objects of my invention to provide a machine, in which the strips of surface paper are continuously fed side by side through the machine, thestrips forming the walls of a receptacle, which advance toward and through an outlet, the plastic material being fed into said receptacle. This invention is adapted to be embodied in a machine in which the plaster board advances vertically from the machine, thereby requiring no conveyer to take the board from the machine.

I accomplish these objects by means of the embodiment of my invention illustrated in the accompanying drawing, in which:

Figure 1 is a front elevation of a complete machine, some of the supporting frame work not being shown in order to more clearly illustrate the invention; Fig. 2 is a side view of the apparatus shown in Fig. 1; Fig. 3 1s a section taken on the line 3-3 of Fig. 1; Fig. '1 is an enlarged fra entary perspective view of the hopper; Fig. 5 is an enlarged section taken on the line 55 of Fig, 1;

Specification of Letters Patent.

Patented July 1, 1919.

Serial No. 278,186.

Fig, 6 is a view of the ratchet and pawl section as seen looking in the direction of the arrow 6 in Fig. 5; Fig. 7 is a fragmentarv perspective view of the severing mechanism; Fig. 8 is an enlarged section taken on the line 88 of Fig. 1; Fig. 9 is a side view of the structure as shown in Fig. 8; Fig. 10 is an elevation of the conveyor; and Fig. 11 is an enlarged elevation of the cutter.

Referring particularly to Fig. 1, the machine consists broadly of a hopper structure A, through which the paper and plaster pass. A severing mechanism for cutting the board into lengths is indicated by B. Cars carrying trays for receiving the board as it emerges and mechanism for operating the cars are indicated by C.

Referring more specifically t0 the hopper construction, a frame serving as a rack for rolls of paper and to support part of the mechanism is indicated by 10. This frame may be of any suitable form. 011 the upper beam of the frame are journaled rollers 11 and 12. Mounted on the lower beam is a guide block 13 having sliding bearing blocks 14 and 15, in which are journaled rollers 16 and 17. The relative position of the rollers 16 and 17 is adjusted by means of a hand screw 18, and the thickness of the plaster board thereby adjusted.

Spring 20 is inserted between the bearing block 15 and the end of the hand screw 19 to allow slight movement under pressure. The bearing block and its roller is held in its inner position, while the amount of resiliency may be adjusted by hand screw 19.

A belt 21 is passed over rollers 11 and 16, and a similar belt 22 is passed over rollers 12 and 17. It will be noted that the rollers are so positioned that the belts are inclined toward each other from thetop to the bottom and are spaced from each other at the bottom to form an opening therebetween through which the partially finished board passes. To keep the belt 21 tight, an idler roller 23 rests against the lower side of the belt. The idler roller is mounted upon an arm 24 piv oted to the framework 10 and held in position by a weight 25 secured to the free end of the arm. A similar roller 26 keeps the belt 22 tight. Conveyor belts 21 and 22 serve as the bottom walls of a hopper. The side walls, as best shown in Fi 4, are formed by side boards 27 and 28 hlnged to bars 29 s rocket w eel which and 30 respectively. The side pieces have fingers 31 and 32 which extend beyond the lower rollers 16 and 17. The side pieces are adjustable as to position, and this adjustment is efierted by means of a hand screw 33 mounted on the frame work 10 and secured to the side pieces by means of a socket 34. It will be understood that some of the mechanical elements are duplicated on the opposite side of the machine.

Rolls of paper indicated by 35 and 3i) in Fig. 1 are disposed to the sides of the rollers 11 and 12. The paper from roll 35 is passed upward over the belt 21 and downwardly through the hopper. In a similar manner the paper from roll 36 is passed over belt 22 and through the hopper. The plaster is placed in the hopper and the belts moved in unison. The weight of the last-er holds the paper against the conveyer elts. If desired, other positive means for holding the paper against the belts may be used. The outer layers of paper 37 and 38 pass from the hopper with a layer of plaster 39 therebetween. In order to move the rollers 11 and 12 in unison sprocket wheels 40 and 40 are fixed to the rollers and chains 41 and 41 pass thereover and over sprocket wheels fixed to intermeshing spur gears indicated generally by 12. A shaft 43 is journaled upon the frame work 10 and fixed thereto is a sprocket wheel A chain d5 passes over sprocket wheel 44. and a sprocket wheel secured to the roller 12 gears shaft 13 to roller 12. A pulley 46 is fixed to shaft 43 and is r ared to a drive shaft 47 by means of a beTt 48. It is obvious that upon rotation of the drive shaft, the paper will be conveyed from the top of the hopper downwardly between the rolls 15 and 16 carrying with it the plaster.

ecured to the frame work 10 are standards 49 and 50. A cutter way piece 51 has two end parts 52 and 53 slidably mounted upon the standards it) and 50. A way is formed in the piece 51 and slidably mounted therein is a block 54. 'iournaled on a bracket secured to the standard 49 is a shaft 55 having fixed thereto a sprocket wheel 66. Mounted on the shaft 55 is a crank arm 57. A connecting rod 58 secures the crank arm to the part 52 of the cutter way. In a similar manner the part5? of the cutter Way is secured by connecting rod 59 to a crank arm so operated by a sprocket when si. Sprocket wheels 56 and 61 are geared together by meahs of a chain 82. Mounted on the same shaft sprocket wheel fil is a is geared thereto by a c ain 63 passin over a sprocket wheel fixed to the shaft 4. It is evident that upon rotation of the shaft 43, the cutter way 51 will be raised and lowered, the plaster board passing continuously from the hripper. cutter way 64 is disposed on the machine opposite to the way )51 and has a block 65 similar to block 5 1 sliding therein. Strung between blocks 54 and G5 is a cutting wire (56 for severing the plaster board. This wire is slack and cuts by a shearing action. To guide it into proper position there are upper guide plates 67 and (S8 and lower guide plates 69 and 70. These guide plates are slotted so that the plaster board will pass therethrough. In order to reciprocate the cutter wire, blocks 54 and 65 are connected by connecting rods to crank arms mounted upon a shaft. Referring to Figs. 1 and 5, block 54 is secured to a connectin rod 71, which in turn is secured to a cranr arm 72 mounted upon shaft 73. In a similar manner block 65 is secured to a connecting rod 74, which is attached to a crank arm 75 fixed to shaft 73. Loosely mounted upon shaft 73 is a pinion 76 which meshes with a rack 77 formed on standard 50. Keyed to the shaft 73 is a ratchet 78, and mounted upon the pinion 76 is a pawl 79 for engagement with the ratchet. By this con struction the pinion and shaft will only be rotated upon movement of the cutter in one direction. As the cutter rises the pawl slips upon the ratchet teeth and the shaft 7 3 remains stationary. ()n the downward movement of the cutter, the pawl engages the ratchet and the shaft is rotated. The rack and gear are so proportioned that movement of the cutter in one direction will cause the crank arm to revolve through 180, thereby moving the cutter wire fi'om one end of its travel to the other end, thereby severing the board. The return of the cutter guide will cause no movement of the cutter wire. However, the next movement of the cutter guide will cause the cutter wire to be returned to the position at which it started its travel, thereby severing the board.

As the plaster board passes from the hopper between the guides in the cutter, the latter reciprocate and. the cutter wire moves back and forth severing the plaster board, but only at the time that the cutter is moving in the same direction as the board and at the same speed.

I have provided a system of cars for receiving the plaster board. A car 80 has trucks 81, which travel upon rails 82. A can 83 is coupled to car 80. These cars carry trays to receive the board. Mounted below the track 82 andjournaled thereon is a shaft 84 carrying a wheel, over which passes a chain 85. Chain 85 is passed over a sprocket wheei geared to shaft 13, so that shaft 84 is positively driven from shaft 43'. fiecured to the shaft 84 by means of a clutch 86, conventi represented, is a sprocket Wheel 87. The ch tch has a shipper arm 88 which is disposed between the tracks and in position to be engaged by a bumper Refined to the body of car 80. The clutch is so arranged that normally it holds sprocket wheel 87 clutched to shaft 84. Passed over sprocket wheel 87 and another sprocket wheel, not shown, at the other end of the track is a chain 90. Referring more particularly to Figs. 1, 8, 9 and 10, a bar 91 extends downwardly from the bottom of car 80. Pivotally mounted upon bar 91 is a hook catch 92 which has a forked end for straddling the perpendicular link of the chain 90 and abutting the horizontal links. Pivoted to the bar 91 adjacent the lower side of the chain 90 is a catch hook 93, which has a forked end arranged to straddle the perpendicular links on the lower side of the belt. A connecting rod 94 secures the hook catch 93 to hook catch 92. The construction is so arranged that when one of the hooks is disposed to abut a link of the chain the other is raised to clear the chain. An inclined guide 95, is disposed below the track so that as the car reaches the end of its travel to the left, hook 93 rides upon the incline lifting it from the lower side of the chain and releasing the car. At the same time hook 92 is lowered to engage the upper side of the chain and the car is moved in the opposite direction. At the other end of its travel, hook 92 is raised by a similar incline 96 and hook 93 engaged, causing the cars to move backward. If the hook 92 does not release at the right hand end of its travel bar 89 will engage the clutch shipper 88 and throw the clutch so as to release sprocket wheel86 and prevent further movement of the cars.

The plaster board as it comes from the machine is flexible and will lay upon the cars or trays on the cars in the position shown in Fig. 1. The gears are so proportioned that as a car passes from under the cutter, the latter is operated to sever a portion of the plaster board. Thus, as the ma chine o erates cutting sections of plaster board, t ey are disposed in layers upon the cars.

It is obvious that I have provided a machine which continuously forms plaster board. Sections of the plaster board are severed without the advance of the board from the machine being interfered With. The sections of the board are then laid in layers upon the cars. No auxiliary conveyers are required to take the board from the machine.

What I claim is:

1. In a plaster board machine, the combination of a hopper having opposite side walls formed by paper traveling to and through the discharge outlet of said hopper, whereby when said hopper is charged with plastic material plaster board passes from the outlet thereof, and severing means advancing with said board.

2. In a plaster board machine, the combination of a hopper having oppositely disposed conveyer belts traveling to the discharge outlet of the hopper, paper carried by said belts to and through said hopper, whereby when said hopper is charged with plastic material plaster board passes from the outlet thereof, and severing means advancing with said board during an interval of time.

3. In a plaster board machine, the combination of a frame, a hopper having oppositely disposed conveyer belts traveling to the discharge outlet of the hopper, rolls of paper mounted on said frame with their strips being conveyed by said belt through said discharge outlet, whereby when said hopper is charged with plastic material plaster board passes from the outlet thereof, and severing means advancing with said board during an interval of time, said severing means having an element for dividing said board during said intervals.

4;. In a plaster board machine, the combination of a frame, a pair of oppositely disposed spaced rollers journaled thereon, a pair of oppositely disposed spaced rollers journaled in said frame lower than said first pair, belts passed over each set of an upper and lower roller, whereby the belts form inclined bottom walls of a hopper with a space be tween the bottom pair of rollers forming an outlet, means to cause said belts to travel toward said outlet, whereby when said hopper is charged with lastic material plaster board passes from tie outlet thereof, and severing means advancing with said board during an interval of time.

5. In a Jplaster board machine, the combination o a hopper having opposite side walls formed by paper traveling to and through the discharge outlet of said hopper, whereby when said hopper is charged with plastic material plaster board passes from the outlet thereof, reciprocable severing means for traveling with said board at the same speed during an interval of time.

6. In a plaster board machine, the combi nation of a hopper having oppositely disposed conveyer belts traveling to the discharge outlet of the hopper, paper carried by said belts to and through said hopper, whereby when said hopper is charged with plastic material plaster board asses from the outlet thereof. and reciprocable severing means for advancing with said board at the same speed during an interval of time.

7. In a plaster board machine, the combination of the frame, a hopper having oppositely disposed conveyor belts traveling to the discharge of the hopper, rolls of paper mounted on said frame with their strips being conveyed by said belt through sald discharge outlet, whereby when said hopper is charged with plastic material laster board passes from the discharge t ereof, and reciprocable severing means for advancing With said board at the same speed during an interval of time.

8. In a plaster board machine, the combi nation of a frame, a pair of oppositely disposed spaced rollers journaled thereon, a

pair of oppositely disposed spaced rollers joumaled in said frame in a plane lower than said first pair, belts passed over each set of an upper and lower roller, whereby the belts form inclined bottom Walls of a hopper with'a space between the bottom pair of rollers forming an outlet, means to cause said belts to travel toward said outlet, strips of paper carried by said belts through said outlet, whereby when said hopper ischarged with plastic material plaster board passes from the outlet thereof, and reciprocable severing means for advancing with sai board at the same speed during an interval of time.

9. In a plaster board machine, the combination of a frame, a pair of oppositely dis posed spaced rollers journaled thereon, a pair of oppositely disposed spaced rollers journaled in said frame in a plane lower than said first pair, belts passed over each set of an upper and lower roller, whereby the belts form inclined bottom Walls of a hopper with a space between the bottom pair of rollers forming an outlet, means to cause said belts to travel toward said outlet, means to feed strips of paper for conveyance by said belts through said hopper, whereby when said holpper is charged with plastic material plaster board passes irom the outlet thereof, and reciprocable severing means for advancing with said board at the same speed durirag, an interval of time.

10. In a laster board machine, the combination 0 means forming plaster board and advancing the Jatter vertically therefrom, and severing means advancing with said board and comprising a cutting eement for passage from one side of the board to the other in alternate directions.

l l. In a plaster board machine, the combination of means forming plaster board and advancing the latter vertically therefrom, and severing means advancing with said board during an interval of 'time and comprising :a cutting element for passage from one side of the board to the other in alternate directions.

112. In a laster board 'machine, the combination o means forming plaster board and advancing the latter vertically therefrom, and severing means reciprocating with said board in its path of travel and comprising a cutting clear-rent for passage from one side of the board to the other in alternate directions to sever the board at intervals when the cutting means and board are advancing at the same speed.

13. In a {plaster board machine, the combination of means forming plaster board and advancing the latter vertically therefrom, severing means advancing with the board, receiving :means for the lengthsof severed board moving in a horizontal clirection:and disposed close to said severing means so tfhatsaid board'is laid flat thereon.

Li. In a plaster board machine, the combination of means forming plaster board and advancing the latter vertically therefrom, severing means advancing With said board 'duringan interval of --time, receiving means for the lengthsoi severed board moving inva horizontal direction and disposed close :to said severing means so that said board is laid flat thereon.

In witness that -1 claim the foregoing I have; hereunto subscribed! my name this 10th day of February, 1919.

IIOHN SGHUMAGHER.

Copies of this patent may he obtained for five cents each,,by.-ad dnesiing the Commissioner of :Patonta, Washington, D. 0." 

